#leftcolumn {
position:absolute;
left:20px;
width:100px;
background-color:blue;
height:100%;

}
#rightcolumn {
float:left; 
width:525px
}
.dropdown {
display:block; 
position:relative
}
.dropdown dt {

display: block;
margin-left: auto;
margin-right: auto;
/*Width of the image.*/
width:48px;
margin-top:0px;
padding:8px; 
font-weight:bold; 
cursor:pointer; 
/*background:url(../images/header.gif)*/
}
.dropdown .upperdd {
border-bottom:none
}
.dropdown dt:hover {
/*background:url(../images/header_over.gif)*/
}
.dropdown dd {
position:absolute; 
top:0; 
overflow:hidden; 
display:none; 
background:#fff; 
opacity:0
}
.dropdown ul {
width:404px; 
border:2px solid black; 
list-style:none
}
.dropdown li {
/*display:inline*/
float:left;
padding-right:25px;
padding-left:25px;
}
.dropdown a, .dropdown a:active, .dropdown a:visited {
display:block; 
padding:5px; 
color:#333; 
text-decoration:none; 
background:#eaf0f2; 
width:194px
}
.dropdown a:hover {
background:#d9e1e4; 
color:black;
}
.dropdown .underline {
border-bottom:1px solid #b9d6dc;
}